BBC3 年
The structure of the digestive system
The digestive system breaks down food into tiny particles which are absorbed into the blood. These particles provide energy for the body to grow, repair itself and remain healthy. Food that cannot ...
BBC2 年
The structure of the digestive system
The digestive system breaks down food into tiny particles which are absorbed into the blood. These particles provide energy for the body to grow, repair itself and remain healthy. Food that cannot ...